{
  "bibcode": "2019GCN.23605....1I",
  "body": "The IceCube Collaboration (http://icecube.wisc.edu/) reports:\n\nOn January 4, 2019, IceCube detected a track-like, very-high-energy event with a high probability of being of astrophysical origin. The event was identified by the High Energy Starting Event (HESE) track selection. The IceCube detector was in a normal operating state. HESE tracks have a neutrino interaction vertex inside the detector and produce a muon that only partially traverses the detector volume, and have a high light level (a proxy for energy). An inspection of the event does not reveal any feature to rule out this event as an astrophysical candidate. However, this event has a light level that is right above the analysis threshold so there is a non-negligible probability that this event is an atmospheric background.\n\nAfter the initial automated alert (https://gcn.gsfc.nasa.gov/notices_amon/68269692_131999.amon), more \nsophisticated reconstruction algorithms have been applied offline, with the direction refined to:\n\nDate: 2019/01/04 \nTime: 08:34:38.23 UT\nRA: 357.98 [-2.1,+2.3] (deg  90% PSF containment) J2000\nDec: -26.65 [-2.5,+2.2] (deg 90% PSF containment) J2000\n\nThe IceCube Neutrino Observatory is a cubic-kilometer neutrino detector operating at the geographic South Pole, Antarctica. The IceCube realtime alert point of contact can be reached at roc@icecube.wisc.edu",
  "circularId": 23605,
  "createdOn": 1546602374000,
  "email": "ckopper@icecube.wisc.edu",
  "subject": "IceCube-190104A - IceCube observation of a high-energy neutrino candidate event",
  "submitter": "Claudio Kopper at IceCube/U of Alberta  <ckopper@icecube.wisc.edu>",
  "eventId": "IceCube-190104A"
}